Lachnomyrmex longinoi Feitosa and Brandčo 2008

Myrmicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker face view

worker lateral view

Queen lateral view (reduced, original).


Costa Rica, Panama. Costa Rica: widespread in lowland wet forest, including the Osa Peninsula, San Vito area at 1200m, Manuel Antonio, Carara, La Selva Biological Station and surrounding Atlantic slope sites to 600m, Penas Blancas Valley, and the Pitilla area of Guanacaste Conservation Area.


Worker: first gastral tergum devoid of erect setae; postpetiolar dorsum irregularly rugose, without a raised subtriangular boss, and with more than 10 erect setae; mesosomal dorsum with irregular short rugae. Queen: first gastral tergum with about 50 or more long erect setae, relatively dense anteriorly, becoming sparser posteriorly, being replaced by extremely short appressed setae barely visible on the polished surface; postpetiole dorsum irregularly rugose, without raised subtriangular boss medially; Weber's length less than 1mm.

Similar species: haskinsi, regularis.

Natural History

Workers and queens occur in samples of sifted leaf litter from the forest floor.

Literature Cited

Feitosa, R. M., and C. R. F. Brandčo. 2008. A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae). Zootaxa 1890:1-49.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505 USA.

Date of this version: 1 April 2009.
Previous versions of this page: 22 July 2005.
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